HUE028227T2 - Self-adjusting ventilation outlet with multiple flow rates - Google Patents

Description

SELF-ADR mis® «ismLàTïôM dütlbt with âiliâîb fww

Ils pressas invendu» relates M s setting Hap ter & seifMdgwiiog ventilation otalet with mahible flbw mes, asnd to a vyptilatSosr outlet thus equipped. 1 is «?ei known practice to srsïsS s versifetioa outlet having the ability to deliver a substantiallyconstant How rate krespcetive of the presmos différence on either side of this ventilation outlet flOeh a ventilation outlet is called ^elibMfusifng*’, and is ased vtgy widely % France, both in the msidemkh sector (as & terminal) sad sa the mblsry sector (ass termine! or doer).

Two main types of selLadltwihti ventilation nődet heve hem* propsssed. Ön the oste hand, ventilation outlets with a membrane ht which feinte dethntts en aithost closed volume which, hy inflation or deflation of the rUmnbrane, is eepehte ol varying, depending on (he pressen? difference, so es to modify the surface eres hsrthe passage of the ventilation air,

Aad os the other hand, veathetioo outlets with a fat flap odpse opening# regulated hy the positon ti; the flap depending os tlw pressure difference m either side of the cadet fMapleateatary springs or eodoMrweighrs make it possible if necessary to be indepeadeat of gravity and to use the outlet ia ail positions. |he ventilation outlets with a fist fl% currently peposed Ibr detivering a predetemrioed Eked How rate are relatively efflefep: because they ttsualiy make it possible to obtain a substantially constant Sow rate vaine across à with a redncedhysteresis hetweea the rise and fall in presstsm itetete tete with multiple tlbw rates have also aheady tea proposed, these flow äs being: obtained, depending upon the type ef ventilation outlet used, by modifying the environment of the membrane or by offsetting a flap that is complementary to the conventionally nseddlat flap.

More precisely, seiHadjashng vendlation oplets with flaps lor delivering snoltigle How rates eotnprise, ott the one band, a Sat regniation flap, that Is tee and Movable, provided ibr adapting to the pressore ditbrenee on ether side so as to regulate the air flow rate, and, on the other hand, a Set setting flap giving the setting of the flow rate to he sebieved; SpeeiHeally, depending on the position of the setting Oap about its fixed slssfl, which may be controlled; tngaually,or by a remote epbfrol, or else hy a motor control ipcoPing to a determined parameter seen as tM detocthm of presence or the level of £Oj for example, it Is then possible to change the nominal How rate vaine. iiowever, it has heeo found that these selfadjostlog vesdltatlon outlets with Hat flaps Ho dohvorfog ntuhlpe flow cates dk! not have a very sattstaetory self-adjastitrg teatnre for all She deciami How rates.

The mere or less efHcietrt eh^acter of selbteinlariee Is ht fact provided hy the relative positions of the sstrihees of contact with the ventilation air of the two Asps, the setting flap and regulation Hap. Since these relative posdions may be reef® or less favorable, h is^ necessary to aeéept a eoinpromise áronod as- intormediate position, which consequently limits the obtainable mage of How rates, in patf ieuiSL since the: angle that the sçltlggiflap asd the regulation flap :ibrtn te he varied aeeptflitig to the pressure eondiidhSi there Is a resulting limitation in the range of possible flow pies bnesnse the fineness of the; reguiaiiop: originales: essentially front the val at of this eagle which must remain gehe small.

Since the ÉssiirrMiiiifePsÉ^btitely pfeöpÉSltel to the surface area of Me passage, it means that, for a given pspssnre difference, it si necessary to rnrsdl^the passage surface area by a factor of 5 to move from a flow rate of 3>> m'V'h ίο s flow rate of 50 sn'Vh, which means a considerable rotation of the setting flap around Is shaft. tífe:i«s§Ji: nCiib&IMiy & fhtufhe angle lormedihy És setting pap satt regulation :üä|5 Pcmsas esseesstve and therefore m Mger allows a eotreet reguhaion.

Decantent ÉP7MBî$ A describes * scfi%d)«s*íng vsnfilslon outlet with motlpte fiúst raies lie obfeet uf the gtssetu iavegtlaa is to pmpnse a self-adjusting ventilation outlet with flaps, of simple design, tö MfeáimátipM'lo1»''r^8S::Jbald«| ii jsossftde te obtain good perfbrmance la ah the 0<sw~rate configurations, le? vary wide: ranges oiihw rate and pressure. A verj important sdvamage of the ànmnikm therefore lies in tire ihat that a single reipreoee nfay he iadaptd in many cases, while maintaining a real sod sustained overall perfoœnmee. to do this, the present inversion relates hr a selftadftistmg ventiisti<<n outlet with mtälfiple flow rates having g paaaywsy főt the veittiiatioh air sod having a reguiailnn Hap, anti comprising a setting flap, having a face designed ip ebanpei the iorfpoing air agi haying, on the; one hsad, a connection edge firhed with ahaehpnut means allowing the setting flap to ixt attached shorn a shaft its a pretleimnined pesil», and, on the other head, an : nppoSiie edge forming a trailing edge,, eharaeierlaod in edge to ihn trailing edge, the lacs of the setting lap is dlvaded atîn: a snccÄiein of fiat facets OdufiPiag &amp; safestnatihfiÿ convex prolié on the iahet.

Specifically, irrespective of the nomintd value of low rale desired, s setting lisp according to the invention always has at least one fiat facet having an appropriate Inclination relative to the regulation lap, witkh finally makes it possible to considerably enhance the capacity of the ventilation outiét to seifiadjost.

Preferably, the number of facets Is heiween 2 and Id. Nevertheless, it shonid he mois understood that the limit embodiment of a setting flag according to the invention is a flap with a continuons succession of verj small fiat facets snoltmng on fite latter a continuous curvilinear profile, Such an etnhodimeni, although covered by fite present patent: application, does not however constitute the heat solution because the Srianda effect on the surface of the flap disrupts the regnlahon.

Again preferably, the facet with the largest surface ares is closest to the commotion edge.

Advaniageorrsiy, the surface area of the fleet closest to the : trailing edge is greater than the surface area of the facet preceding it.

According to a variant ensbodkoeo? of the setting lap according to the invention;, the respective surface area of the Sheets decreases hem the connection edge to the trailing edge.

Again advantageously, a ventilation nutlet according to the invention comprises manual and/or automatic control means making si possible to change the position of the setting fiap oisout its shaft.

The invention will he better understood with the aid of ifte detailed description that is set out below with reference to the appended drawing in winch; figures I to 1 ate schematic views in longitudinal section of a self-adjusting ventilation outlet according ks the of air deiivutud is respectively at tnininnan, tneltuta, maximum level. A 1 with maligle low rates, respectively of 30 m%, Î0Ô srVfc nod 15(1 m\% as shown mspeetivdy in figures I to 3, comprises s duet 2 having an Inlet 3 and an outlet 4 separated from one aastiharihy aeeotnsl poriinn l fsonsfng a regulation meehanispr made with the aid of a;regupimr lap 4 and;a. setting dap 7. As shown by the rows, the ventilation âîr enters the duct 2 is a conventional «« through its inlet 3, then passes through the central portion $ and dually «scales through the outlet 4 at a regulated flow rale.

Mors precisely, the regulation dap 6 is made to the tem of a papal omnuled so as to pivot about s shad t by steate ®#s eehheeiimt of ite hinge type, in « coutentlohai tnnhnct, tbc pæet is extended on Üsd side of its border situated «lose to te outlet 4, by ass are 9 directed downward. When the ventilation outlet t ia stopped, tbs regulation lap δ is kept to a substantially horizontal position. to operation, the pressure dlffeettee oh either side of te regulation flap d causes the Satter to rotate about its shaft 8, as shown in doteoduteh iioes fet figures I to 3.

The setting |isp 1 eopprsses a tee W desiped to channel the incommg air sad; has* m te ops baud, &amp; copnsetion edge 1 I ftted with ateeftrngnt means 12 making St possible to atteNteteite''e# 7 to a shad foot :tewb| bt a prtetetened pssitioUj sod, oh the other laud, au oppositeadp tenting a tell ing «dp 14, the adiet tea edges of the tee |lyped^ß4lcute to tbe coapeotlou edge ! 1 Md the Iteiing edge 14, are each extended by a vortical wall 15,

Mors particularly, tem the connection edge 11 to the trailing edge 1% the face IÖ is divided into a succession of lour 1st facets Id to 19 conferring a substantially convex profile on the latler,

Aaeordibg: to a preferred variant embodiaient;, the respecti ve surtace area of the keels Id to 18 decreases from the connection edge 11 to the trailing edp 14, bat the lacet 19 nevertheless has a trading sorted urea slightly greater thp ibs surtee area of the precedlttg test 18 because of its importanee ip the diversion of the airstennx ;^s®eiteaUy*.'i has teen noted that it is advantageous to provide larger sortes areas close to the ootuwetion edge 11 because, as sitewe in figure 3, when the delivered flow rate of air is at a maximum ttod when only the teets id, I? eiase to the commettes edge 11 teve art apptmprisie hteteloa with the reguteien Sap 6, the distance separating the setting lap d from tire regtetmn lap ? is also at a maximum.

On the other tend, because of the proximity of the regulation lap 6 in the cuse of a low-flow-rate regulation, as shows so figure I, it has been noted that the effective mtetetebb with the setting dap ? does not make It necessary to con fer ns huge a surtee area us the teets I t, 19 that ate placed in the vicinity of the trading edge 14 and that alone teve an appropriate inebnation with the regulation dap &amp; tedbeetimra, It istenid be welt understood that the vetettedé utftiet 1 mcosgtetes manual audio automate contel means (not shown) making k possible to ehaogethe position of tte settisg tlap 7 about its shaft hr order to modify the fiove rate of air delivered by said vhnftedrat atidei 1,

Although the invention has teen described wish reference to parhentar asemptey embodiments, It is gulte evident that it is in no way limited thereto and that it includes ail the technical erptivalests of the means described and theft eomhinaions litte latter tel wlftlp te «itaxt of the tnvggtion.

Claims (2)

Ahtematllatsso transcendent sxeîhM opening more horses ^ nammal EXCELLENT K1ÉNYP0NT0K I. ÂniomatÉA adjustable breathable: aperture (!) More airship, myth: e $ ims $ &amp; overflow and a trap b «Ä0 damper (?). "EE. va «is one of Milets (KB atm s® servants to channel the inflow air, and which has a total & dual edge (U), which is provided with an attachment element (12), which is the damper of the alignment”: at the positions of an axis requested <iatia | oztPija, and another PÉZA iron in a sawdust pepme, digging leaking rim (14) characterized by a damper Mölefe · m- $ other &amp; · ··· from the leaking lump of flat segments (16 - 19) a vented aperture (i) according to claim 1, characterized in that the ball valve (?) 2 -10: flat segment! 3, a jet opening (i) according to the light point 1 or 2, characterized in that the largest flap (16) of the flap (7) of the exhibiting springs is closest to the pemmheafl1). 4. Ventilation aperture according to claim 3 (characterized in that the adjusting flap (?) Si; the surface of the segments (1.6 - iS.) From the shrinking egg {Hja ssivstgö: flange (14) kisses, he. According to claim 1, the surface (19) of the adjusting flap (?) Is located at the top of the leaking edge (14), closest to the segment (18) in front of it (18). I "Claims 5. A vent aperture (1), comprising an actuator, and / or an automatic control element, with which the position of the adjusting flap (7) can be varied from the shaft stone.